Emma was the mortal fiancée of Andrew, a male witch who was killed by Belthazor under orders of The Source of All Evil. Since his death, she had been using his books and spells to give her the power to avenge him. However, this path had turned her vengeful and bitter.

Emma encountered the Charmed Ones when they were trying to vanquish the demon Sykes, whom she had mistaken for Belthazor. She tried to kill him with the very athamé that killed her love. However, when she saw Cole transform into Belthazor, she realized he was the one who killed Andrew. Emma then focused on killing Cole and used a power stripping potion on him, leaving him mortal and powerless. She still intended to kill Cole, but Phoebe stopped her, explaining that he was an innocent now. This convinced her to finally let go of her obsession for revenge and move on.